Compressor



May 2-5 1926, 1,586,211

.1. MELNE COMPRESSOR Filed April 27 PATENT OFFICE.

JOHN MILNE, Q]? NEW YORK, N. Y,

COMPRESSOR.

Application filed April 27, 1922. 'Serial No. $56,886:

This invention relates to a compressor. The object of the invention is the production of a compressor with but few parts, and simple in construction. A second object of the invention is the production of a compressor of the rotary type in which the cylindrical piston thereof moves in the interior of the cylinder, to compress and discharge air or other fluids drawn therein. A third object of the invention is the production of a rotary compressor with a sliding partition that rides on its cylindrical piston which is eccentrically located in the cylinder. A fourth object of the invention is the production of a compressor in which the piston thereof with its parts coacting can move either at a high or low rotative speed. A fifth object of the-invention is a compressor with a plurality of pistons, that actuate independently ofeach other with respect to the fluids operating with each. V Fig. 1. represents a side view and partial section of Fig. 2 on the line 1, 1. Fig. 2 shows a partial right hand side view and section of Fig. 1 on the line 2, 2; Fig. 3 shows a top plan view of Fig. 2; Fig. 4' represents a partial side view and partiahsection of the piston of the compressor as on the line'4, 4 of Fig. 5; Fig. 5 indicates a side view of Fig. 4; Fig. 6 represents a front view of the sliding partition of the compressor; Fig.7 shows a top plan view of Fig.

6; Fig. 8 indicates a bottom plan view of Fig. 6; Fig. 9 shows a top plan view of a valve seat; Fig. 10 represents an elevation of a bolt; Fig. 11 is a side view of Fig. 10; Fig. 12 shows an elevation of a piston ring; Fig. 13 is an end View of'Fig. 12; Fig. 14 represents a vertical axial section of a modification of the invention and Fig. 15 indicates a side view offsome of theelements of Fig. 14.

The cylinder of the compressor has formed therewith, in this instance at its upper end the outlet hub 21 with the exterior" threads 22 and the upper face 23. A foot 24 is formed with the cylinder -20. In the cylinder and hub are formed the partition guide opening 25 rectangular in cross section. An outlet port 26 extends from the interior of the cylinder and connects with the opening 25. At the intersection of the cylinder 20 and the hub 21 are formed circular recesses 27. Covers'28 are bolted to the side faces of the cylinder 20 and engage said recesses 27. Inlet ports 29 are formed in the hub 21 and extend to .the interior of the cylinder- 20.

A cylindrical piston'or rotor 30 is eccentrically located in the cylinder 20 and is supported on the driving shaft 31. The said piston 30 has formed therewith the circumferential groove 32, the hub 33 and the eccentric side cavities 34. Wicking 35 saturated with a lubricating agent is located in the cavities 34. A piston ring- 38 is slidably seated in the groove 32 and has formed therewith the T shaped opening 39 and the openings 40. A sliding partition is indicated with itsside faces 46, 47, the flat top face 48 and'the bottom face 49, which latter may be fiat or slightly curved.' The said-partition 45 divides the cylinder 20 into two compartments. A tapered opening 50 extends through the partition from the top.

face 48 to the bottom face 49. A longitudinal opening 51 extends through the partition and a branch opening 52 extends from the opening 51 to the side face 47. Wicking 53 saturated with a lubricant is located in the opening 51. A bolt 55 with the T shaped head 56 and the threaded end 57 extends through the partition 45 with its T shaped head 57 and looks with the T shaped openhas formed a plurality of slits '66, to' form 1 at oneend thereof the plurality of fingers 67 that normally cover the ports 63. At the other end of the valve 65 is formed the loop 68 with the hook end 69, and the latter is locked in the slot 70, formed in the hub 21.

21 and their'heads bear'against the loo 6.8, to regulate the tensional resistance of the valve 65, and the pressure between the fingers 67 and thevalve seat 62. Referring to Figs. 14 and v 15 the invention is by locating within the cylinder a air of pistons 30 fastened to the shaft 31. separator plate which divides the cylinder into two chambers, bears against t e adjacent Tension screws 71 are-threaded into the huh I modified circum erential surface of the of the invention is to 1n cylindrical ed i faces of said pistons 30. Each of the pistons 30 is shown with the ring 38 and the sliding partition 45. In this instance the pistons 30 are fastened to the driving shaft 31 with their ecoentricities in diametricallv opposite positions.

Referring to Figs. 1 to 13, when the shaft 31 is rotated, the iston 30 will move and air or other fluid is rawn into the cylinder 30 through the inlet ports 29. Immediately after the piston leaves the crown of the in terior circumferential surface of the cylinder 20, the air or other fluid operated upon enters the said cylinder through the inlet ports 29. Upon the further movement of the piston the air or other fluid continues to enter the cylinder 20, until the cycle of the movement of the piston has been completed. At the same time the air or fluid that had entered the cylinder in the previous cycle has been compressed and discharged from the c linder, by way of the outlet port 26 and the ports 63. From the latter the air or fluid enters the duct 75 to be directed to the place desired. The resent exemplification be taken as illustrative and not limitative thereof.

Having described m invention what I desire to secure by lzetters Patent and claim is:

1. In a compressor the combination of a cylinder having an inlet port, an outlet port and a guide opening, a moving cylindrical piston eccentrically supported in the cylinder and havin a circumferential groove, a.

piston ring sli ably supported in said groove, a partition slidably guided in said guide openin with its lower face riding on the iston and means to adjustably connect sai partition and ring. 1

2. In combination, a cylinder having inlet and outlet ports and a guide opening, a moviston eccentrically supportn the cylin er, a piston ring supported on the piston, a partition ided in said guide opening with its lower ace bearing on the circumferential surface of the ring and means to maintain contact between the circumferential surface of the ring and the lower end of said partition. I

3. In a compressor the combination of a cylinder having an inlet portand an outlet port and a guideppening coacting with said outlet port, a rotating cylindrical piston eccentrically supported in'the' cylinder and Leeann w having a circumferential groove, a piston ring supported in said groove, a partition having a tapered opening slidably guided in said guide openin with its lower face riding on the circum erential surface of the piston and abolt extendin through the opening of said partition a justably connecting it and said piston ring.

at. In a compressor the combination of a cylinder having an inlet port and an outlet port and a guide opening co-acting with said outlet port, a moving cylindrical piston eccentrically supported in the cylinder and having a circumferential groove, a piston ring'supported in said groove, a partition having a tapered opening slidably guided in said guide opening with its lower face riding on the circumferential surface of the piston and a bolt extending through the tapered opening of said partition adjustably connecting it and the iston ring, an opening for a sliding partition with a supplemental port located at the outer end of the said partition opening, and an automatically operated valve coacting with the supplemental port.

5. In a compressor the combination of a cylinder havin an inlet port and an outlet port and a gui e opening coacting with said outlet port, a movin centrically supporte in the cylinder and having awircumferential groove, a piston ring supported in said groove, a partition having an opening gui ed in said guide openin with its lower face riding on the circum erential surface of the piston and a bolt extendin through the tapered opening of said partltion adjustably connecting it and said piston ring, a valve seat with a supplemental port located at the end of the said guide opening distant from said piston ring and an automatically operated valve coacting with said supplemental port.

6. In a compressor the combination of a cylinder having an inlet port and an outlet port, a moving cylindrical piston in said cylinder having a groove in its circumferential face, a ring slidably seated in said groove and means coacting with said ring to divide the cylinder into-two compartments.

Signed at the borough of Manhattan, city of ew York, in the county of New York and State of New York, this 26th day of April, A.'D. 1922.

JOHN ,MILNE.

cylindrical piston ec-- 

